<template>
  <div ref="container" style="height:75%">

  </div>
</template>
<script>
import { Gauge } from '@antv/g2plot';
export default {
  data() {
    return {

    }
  },
  methods: {
    loadCharts() {
      const ticks = [0, 1 / 3, 2 / 3, 1];
      const color = ['#F4664A', '#FAAD14', '#30BF78'];

      const gauge = new Gauge(this.$refs['container'], {
        percent: 0,
        range: {
          ticks: [0, 1],
          color: ['l(0) 0:#F4664A 0.5:#FAAD14 1:#30BF78'],
        },
        indicator: {
          pointer: {
            style: {
              stroke: '#D0D0D0',
            },
          },
          pin: {
            style: {
              stroke: '#D0D0D0',
            },
          },
        },
        statistic: {
          title: {
            formatter: ({ percent }) => {
              if (percent < ticks[1]) {
                return '差';
              }
              if (percent < ticks[2]) {
                return '中';
              }
              return '优';
            },
            style: ({ percent }) => {
              return {
                fontSize: '36px',
                lineHeight: 1,
                color: percent < ticks[1] ? color[0] : percent < ticks[2] ? color[1] : color[2],
              };
            },
          },
          content: {
            offsetY: 36,
            style: {
              fontSize: '24px',
              color: '#4B535E',
            },
            formatter: () => '系统表现',
          },
        },
      });

      gauge.render();
      let data = 0.7;
      const interval = setInterval(() => {
        if (data >= 1.5) {
          clearInterval(interval);
        }
        data += 0.005;
        gauge.changeData(data > 1 ? data - 1 : data);
      }, 100);
    }
  },
  created() {

  },
  mounted() {
    this.loadCharts()
  }
}
</script>
